DESIGN OF METAL STRUCTURES OF MOBILE FOUNDATIONS AND FOUNDRY TECHNOLOGY FOR THEIR PRODUCTION

A short overview of promising directions of development in the field of construction of metal, in particular, mobile foundations, was made. This will contribute to the cheapening and popularization of such foundations, which can become a scientific and practical basis for foundation construction, in particular for modular construction based on metal structures. Unlike welded for bolted structures, installation is simplified and bolted connections provide the possibility of disassembling the structure with transportation to another place, which is important for hangars, warehouses that change location. An example of topological optimization of a mobile foundation design is given, and a mobile foundation design that uses the strut effect is considered, as well as a promising design for manufacturing using 3D technology. It was noted that an effective means of reducing the cost of metal structures is the reduction of metal consumption. Modern foundations, which are single massive structures, can be significantly lightened thanks to the use of prefabricated hinge-rod systems or solid cast metal structures with cavities, which do not significantly affect the stress-strain state of the foundation. Applied research methods: modeling, review and generalization of the studied materials, devoted to the issues of the article. The application of cast metal constructions, in particular those made by Lost Foam casting process, has significant opportunities. Examples of modeling of large castings and manufactured models using 3D technologies from the experience of foundry practice of PTIMA of the National Academy of Sciences are given. Construction using metal structures has all the prerequisites to become an effective solution in the construction industry, which will contribute to the reconstruction of our country, which receives metal from its own ores and is able to convert it into a high-tech, knowledge-intensive product, in particular in the form of lightweight construction metal structures.